Effect of the Operating Conditions on Methane Gas Hydrate Formation to Separate CH4 in the Bio-gas

서지정보

· 발행기관 : 한국환경기술학회
· 수록지 정보 : 한국환경기술학회지 / 17권 / 6호 / 570 ~ 578페이지
· 저자명 : 김정숙, 박종태, 김민호, 장정국

초록

In this study, gas hydration technology was used to separate/capture the methane gas in bio-gas. In order to conserve the energy, it is necessary to decrease the gas hydrate induction time and to increase the gas consumption rate in the methane gas hydration process. Therefore, the effect of operating conditions on the production characteristics of the methane gas hydrate was investigated by varying stirring speed and subcooling temperature. The effects of impeller stirring speed were examined by varying stirring speeds from 0 to 600 rpm. The subcooling temperatures ranged from 2 K to 8 K and were applied either by varying temperature from 272 K to 278 K at a constant pressure of 50.71 bar or by varying pressure from 28.55 bar to 50.71 bar at a constant temperature of 272 K. The experimental results showed that methane gas hydrate was not formed with an impeller stirring speed of 150 rpm at conditions of 272 K, 37.94 bar and 275 K, 50.71 bar. As the impeller speed increased, reaction completion time decreased for experiments at 272 K, 37.94 bar and 273 K, 50.71 bar. The induction time for gas hydrate formation was decreased and the gas consumption rate was increased with the increase of the subcooling temperature and stirring speed.

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